Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. Some fanfictions might explore how Shirou's skills could be incorporated into the Assassin's Creed universe, or how he would interact with the Assassins and Templars.
Another theme is friendship or rivalry. Some fanfictions depict them as friends who support each other, while others focus on their rivalry. It could be due to differences in their personalities or their cultural backgrounds from their original mythologies. The exploration of this dynamic can be really engaging.
Well, you can try searching on fanfiction platforms like Archive of Our Own. There might be a good number of stories there. Just type in 'counter gardean emiya x kuro' in the search bar and see what pops up.
One common theme is the clash of ideologies. Shirou has his own set of beliefs and the Assassin's Creed universe has its own complex ideology. Another is the exploration of new powers. Shirou might gain new abilities in the Assassin's Creed world or vice versa.
Another plot could involve a love triangle where Shirou is caught between his feelings for Fem Gilgamesh and another character. This would add a layer of drama and conflict as he has to navigate his emotions and the complex relationship dynamics. Fem Gilgamesh, with her pride, would also have to face the idea of competing for Shirou's affection.
Saber is a great character to pair with Emiya. Their relationship in the original Fate series has a lot of potential for further exploration in fanfic. There's also Rin Tohsaka. Given their shared history and the fact that they both play important roles in the overall Fate story, it can lead to some interesting interactions in fanfic. Another good option could be Illya, as their family connection can be a rich source of plot development.
One great Freya Ishtar fanfiction is 'The Meeting of the Goddesses' which delves into their first encounter in a unique and creative way. It has vivid descriptions and really brings the characters to life.
The phrase 'naruto is the second god of ishtar fanfiction' is a very specific one. Fanfiction allows for a lot of creative crossovers. Here, it seems like a fan has decided to elevate Naruto to a very high status within the realm of Ishtar in their fictional story. It might be that they are exploring new storylines, power dynamics, or relationships by making Naruto the second god. It could also be a way to attract readers who are fans of both Naruto and stories related to Ishtar.